Global Marketing for Tube & Pipe DIN 17457-85 …

1 Global Marketing for Tube & Pipe DIN 17457-85 welded circular austenitic stainless steel tubes SUBJECT TO SPECIAL REQUIREMENTS. 1. Field of application This standard applies to welded circular tubes and pipes (hereinafter briefly referred to as tubes ) subject to special requirements and made from the austenitic stainless steels listed in table 1. These tubes are predominantly used in the construction of pressure vessels, chemical plant and pipework. The limits of application and other specifications given in this standard shall apply except in cases where other specifications. This standard does not apply to general purpose welded circular stainless steel tubes (see DIN17455).

2 Chemical Composition (%). Grade Mfg. Process C Si Mn P S Ni Cr Mo Others X5 CrNi1820 W - - - - ~ ~ - - X2 CrNi1911 W - - - - ~ ~ - - X2 CrNiN1810 W - - - - ~ ~ - N: ~ X6 CrNiTi1810 W - - - - ~ ~ - Ti: 5 %C, X6 CrNiNb1810 W - - - - ~ ~ - Nb: 10 %C, X5 CrNiMo17122 W - - - - ~ ~ ~ - X2 CrNiMo17132 W - - - - ~ ~ ~ - X6 CrNiMoTi17122 W - - - - ~ ~ ~ TI: 5 %C, X2 CrNiMoN17133 W - - - ~ ~ ~ N: ~ X2 CrNiMo18143 W - - - ~ ~ ~ - X5 CrNiMo17133 W - - - ~ ~ ~ N: ~ X2 CrNiMoN17135 W - - - ~ ~ ~ N: ~ Material Tensile Test MPa or N/mm2 Remarks Grade Number Min Yield point Tensile Strength (Similar to JIS). X5 CrNi1820 195 500~720 - X2 CrNi1911 180 460~680 - X2 CrNiN1810 270 550~760 - X6 CrNiTi1810 200 500~730 SUS321TB.

3 Global Marketing for Tube & Pipe X6 CrNiNb1810 205 510~740 SUS347TB. X5 CrNiMo17122 205 510~710 SUS316TB. X2 CrNiMo17132 190 490~690 - X6 CrNiMoTi17122 210 500~730 - X2 CrNiMoN17133 295 580~800 - X2 CrNiMo18143 190 490~690 - X5 CrNiMo17133 285 510~710 - X2 CrNiMoN17135 315 580~800 - Table 1 steel grades and chemical composition determined in the cast analysis1 ). steel grade % by mass Symbol 2) Material Number C max Cr Mo Ni Others3). X5 CrNi1810 to - to - X2 CrNi1911 to - to - X2 CrNiN1810 to - to N: to X6 CrNiTl1810 to - to Ti: 5 X %C, up to X6 CrNiNb1810 to - to Nb: 10 X %C, up to ). X5 CrNiMo17122 to to to _. X2 CrNiMo12132 to to to _.

4 X6 CrNiMoTi17122 to to to Ti: 5 X %C, up to X2 CrNiMoN17133 to to to to :S X2 CrNiMo18143 to to to S X5 CrNiMo17133 to to to S X2 CrNiMoN17135 to to to to :S 1. ) Elements not quoted in this table in respect of the individual steel grades shall not be added deliberately to the steel without the purchaser's consent except for the purpose of finishing the melt. Such elements shall in no way impair the usability or processablity of the steel . its weldability not shall they affect the properties specified in this standard. 2. ) The symbols given in the December 1972 edition of DIN 17440 may continue to be used during the period of validity of this standard (see comparison table in the Explanatory notes).

5 Global Marketing for Tube & Pipe 3. ) Unless otherwise specified. P ,Si 4. ) Tenteium determined together with niobium and expressed in the form of niobium content. Table 2 Amounts by which the chemical composition in the product analysis may deviate from the limit values specified for the cast analysis Limit values specified for the cast analysis as in table 1 Permissible deviations1). Element % by mass % by mass + Carbon (C). > + Silicon (Si) + Manganese(Mn) + Phosphorus(P) + Sulfur(S) + Nitrogen(N) Chromium(Cr) Molybdenum(Mo) <100 Nickel(Ni). Niobium(Nb) Titanium(Ti) 1) If several product analyses are carried out for a single cast and if these elements show contents for a single element outside the range specified for the cast analysis, this content shall either exceed the permissible maximum content or be below the permissible minimum content, but not both at the same time for one cast.

6 Table 3 Mechanical properties of the steels at ambient temperature in the as delivered condition specified in table 6 (with the exception of condition (0) and their resistance to intercrystalline corrosion (applicable to wall thicknesses up to 50mm) 1). Minimum Minimum Minimum elongation Minimum Heat Tensile 1% after fracture 2) impact energy 3) Resistance to steel grade treatment strength 2). proof stress proof stress (Lo=5do (ISO V-notch test pieces) intercrystalline corrosion 4). condition 2) N/ . N/ N/ % J. Global Marketing for Tube & Pipe in the as after further processing Symbol Material Longitudinal Transverse Longitudinal Transverse delivered by welding without condition heat treatment 195 230 500 to 700 40 35 g.

7 5) g. 5). X5 CrNi 1810. Solution 180 215 460 to 680 40 35 g. g. X2 CrNi 1911. annealed 270 305 550 to 760 35 30 g. g. X2 CrNiN 1810 85 55. 6) and 200 235 500 to 730 35 30 g. g. X6 CrNiTi 1810. 7) zuenched 180 215 460 to 680 35 30 g. g. X6 CrNiNb 1810. 205 240 510 to 740 35 30 g. g. X5 CrNiMo 17 122 205 240 510 to 710 40 30 g. 5) g. 5). Solution X2 CrNiMo 17 132 190 225 490 to 690 40 30 g. g. annealed X6 CrNiMoTi 17 122 6) 6) 210 245 500 to 730 35 30 85 55 g. g. and X6 CrNiMoTi 17 122 7) 7) 190 225 490 to 690 35 30 g. g. zuenched X6 CrNiMoNb 17 122 215 250 510 to 740 35 30 g. g. Solution X2 CrNiMoN 17 133 295 330 580 to 800 35 30 g.

8 G. annealed X2 CrNiMo 18 143 190 225 490 to 690 40 30 85 55 g. g. and X5 CrNiMo 17 133 205 240 510 to 710 40 30 g. 5) g. 5). zuenched Solution annealed X2 CrNiMoN 17 135 285 315 580 to 800 35 30 85 55 g. g. and zuenched 1) For greater wall thicknesses, the values shall be specified by agreement. 2) The upper value of tensile strength may be exceeded by 70N/ and the minimum values of elongation after fracture may be 5 units less in the case of products which are supplied in conditions dO, kO, d1 and k1 described in table 6 and which are not in the solution annealed and quenched condition. 3) Average value from three test pieces at ambient temperature.

9 Only one individual value of the test unit may be less than this value by a maximum of 30%. 4) When tested in accordance with DIN 50 914, G. means existing up to the limit temperatures listed in the last column of table 4. 5) Only for wall thicknesses not exceeding 6 mm. Global Marketing for Tube & Pipe Table 4 Minimum values of elevated temperature and 1% proof stresses and guideline values for the limit temperature in the case of intercrystalline corrosive stress steel grade Heat proof stress at a temperature, in , of 1% proof stress at a temperature, in , of Limit temperature 1). Material treatment 50 100 150 200 250 300 350 400 450 500 550 50 100 150 200 250 300 350 400 450 500 550.

10 Symbol . number condition N/ N/ . 177 157 142 127 118 110 104 98 95 92 90 211 191 172 157 145 135 129 125 122 120 120 300 2). X5 CrNi 1810 Solution 162 147 132 118 108 100 94 89 85 81 80 201 181 162 147 137 127 121 116 112 109 108 350. X2 CrNi 1911 annealed 245 205 175 157 145 136 130 125 121 119 118 280 240 210 187 175 167 161 156 152 149 147 400. X2 CrNiN 1810 and 190 176 167 157 147 136 130 125 121 119 118 222 208 195 185 175 167 161 156 152 149 147 400. X6 CrNiNb 1810 quenched 191 177 167 157 147 136 130 125 121 119 118 226 211 196 186 177 167 161 156 152 149 147 400. Solution X5 CrNiMo 17 122 196 177 162 147 137 127 120 115 112 110 108 230 211 191 177 167 156 150 144 141 139 137 300 2).